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Bluetooth: Create basic LE scan interface

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Adds needed data structures.
Adds basic HCI interface to start/stop LE scan.

Change-Id: I69790b11d191078952ce05da386961c5c55a7172
Signed-off-by: Arkadiusz Lichwa <arkadiusz.lichwa@tieto.com>
This commit is contained in:
Arkadiusz Lichwa 2015-05-08 10:33:34 +02:00 • committed by Anas Nashif
commit d46de84c03
4 changed files with 118 additions and 0 deletions
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2
include/bluetooth/bluetooth.h
View file

@ -87,5 +87,7 @@ struct bt_eir {
int bt_start_advertising(uint8_t type, const struct bt_eir *ad,
const struct bt_eir *sd);
int bt_start_scanning(uint8_t scan_type, uint8_t scan_filter);
int bt_stop_scanning();
#endif /* __BT_BLUETOOTH_H */

24
include/bluetooth/hci.h
View file

@ -202,6 +202,30 @@ struct bt_hci_cp_le_set_adv_enable {
uint8_t enable;
} PACK_STRUCT;
/* Scan types */
#define BT_HCI_OP_LE_SET_SCAN_PARAMS BT_OP(BT_OGF_LE, 0x000b)
#define BT_LE_SCAN_PASSIVE 0x00
#define BT_LE_SCAN_ACTIVE 0x01
struct bt_hci_cp_le_set_scan_params {
uint8_t scan_type;
uint16_t interval;
uint16_t window;
uint8_t addr_type;
uint8_t filter_policy;
} PACK_STRUCT;
#define BT_HCI_OP_LE_SET_SCAN_ENABLE BT_OP(BT_OGF_LE, 0x000c)
#define BT_LE_SCAN_DISABLE 0x00
#define BT_LE_SCAN_ENABLE 0x01
#define BT_LE_SCAN_FILTER_DUP_DISABLE 0x00
#define BT_LE_SCAN_FILTER_DUP_ENABLE 0x01
struct bt_hci_cp_le_set_scan_enable {
uint8_t enable;
uint8_t filter_dup;
} PACK_STRUCT;
#define BT_HCI_OP_LE_ENCRYPT BT_OP(BT_OGF_LE, 0x0017)
struct bt_hci_cp_le_encrypt {
uint8_t key[16];

89
net/bluetooth/hci_core.c
View file

@ -828,3 +828,92 @@ send_set_param:
return bt_hci_cmd_send_sync(BT_HCI_OP_LE_SET_ADV_ENABLE, buf, NULL);
}
int bt_start_scanning(uint8_t scan_type, uint8_t scan_filter)
{
struct bt_buf *buf, *rsp;
struct bt_hci_cp_le_set_scan_params *set_param;
struct bt_hci_cp_le_set_scan_enable *scan_enable;
int err;
if (dev.scan_enable == BT_LE_SCAN_ENABLE) {
return -EALREADY;
}
buf = bt_hci_cmd_create(BT_HCI_OP_LE_SET_SCAN_PARAMS, sizeof(*set_param));
if (!buf) {
return -ENOBUFS;
}
set_param = (void *)bt_buf_add(buf, sizeof(*set_param));
memset(set_param, 0, sizeof(*set_param));
set_param->scan_type = scan_type;
/* for the rest parameters apply default values according to
* spec 4.2, vol2, part E, 7.8.10
*/
set_param->interval = sys_cpu_to_le16(0x0010);
set_param->window = sys_cpu_to_le16(0x0010);
set_param->filter_policy = 0x00;
set_param->addr_type = 0x00;
bt_hci_cmd_send(BT_HCI_OP_LE_SET_SCAN_PARAMS, buf);
buf = bt_hci_cmd_create(BT_HCI_OP_LE_SET_SCAN_ENABLE, sizeof(*scan_enable));
if (!buf) {
return -ENOBUFS;
}
scan_enable = (void *)bt_buf_add(buf, sizeof(*scan_enable));
memset(scan_enable, 0, sizeof(*scan_enable));
scan_enable->filter_dup = scan_filter;
scan_enable->enable = BT_LE_SCAN_ENABLE;
err = bt_hci_cmd_send_sync(BT_HCI_OP_LE_SET_SCAN_ENABLE, buf, &rsp);
if (err) {
return err;
}
/* Update scan state in case of success (0) status */
if (!rsp->data[0]) {
dev.scan_enable = BT_LE_SCAN_ENABLE;
}
bt_buf_put(rsp);
return 0;
}
int bt_stop_scanning()
{
struct bt_buf *buf, *rsp;
struct bt_hci_cp_le_set_scan_enable *scan_enable;
int err;
if (dev.scan_enable == BT_LE_SCAN_DISABLE) {
return -EALREADY;
}
buf = bt_hci_cmd_create(BT_HCI_OP_LE_SET_SCAN_ENABLE, sizeof(*scan_enable));
if (!buf) {
return -ENOBUFS;
}
scan_enable = (void *)bt_buf_add(buf, sizeof(*scan_enable));
memset(scan_enable, 0x0, sizeof(*scan_enable));
scan_enable->filter_dup = 0x00;
scan_enable->enable = BT_LE_SCAN_DISABLE;
err = bt_hci_cmd_send_sync(BT_HCI_OP_LE_SET_SCAN_ENABLE, buf, &rsp);
if (err) {
return err;
}
/* Update scan state in case of success (0) status */
if (!rsp->data[0]) {
dev.scan_enable = BT_LE_SCAN_DISABLE;
}
bt_buf_put(rsp);
return 0;
}

3
net/bluetooth/hci_core.h
View file

@ -53,6 +53,9 @@ struct bt_dev {
/* Advertising state */
uint8_t adv_enable;
/* Scanning state */
uint8_t scan_enable;
/* Controller buffer information */
uint8_t le_pkts;
uint16_t le_mtu;